Structural sheets usually carry an S prefix. The set starts with general notes, then foundation plans, framing plans, schedules and details.
A concrete sub measures footings and slabs from them. A steel fabricator lists beams and columns. A rebar supplier reads the bar schedules.
Other trades need these sheets too. A gym equipment contractor checks the roof framing where backstops hang. A mechanical sub checks openings for ducts.
Read the structural general notes first. They hold concrete strengths, rebar grades, inspection rules and delegated design items.